题目

1700年美国的黑种人口只有2.7万人，1820年达到177.2万人。黑种人在美国剧增的主要原因是： A．新航路开辟    B．自然增长   C．战争中的难民流亡   D．三角贸易 答案：D3．听第10段材料，回答第17至20题．17．How does the man feel？A．Tired．B．Anxious．C．Delighted．18．What can we learn about the woman？A．She got a new house．B．She bought a new car．C．She lives near workplace．19．What does the woman advise the man to do？A．To move into her apartment．B．To talk with his landlord．C．To change his job．20．How far is it from the woman's apartment to the man's office？A.15 minutes'car ride．B.15 minutes'bike ride．C.15minutes'walk．